22 Commits

Author	SHA1	Message	Date
Kevin Bortis	6be36b6bda	Add Zstandard compression support ... Implements zstd as an alternative to LZMA for data block and subchannel compression using the allocated compression IDs 4 (kCompressionZstd) and 5 (kCompressionZstdCst). Adds zstd v1.5.7 as a bundled submodule with a static library build including x86_64 assembly fast path for decompression. Write path selects zstd or LZMA based on the zstd option. Subchannel blocks use zstd+CST instead of LZMA+CST when enabled. LZMA properties header is only written for LZMA-based compression types, preventing format corruption in zstd-compressed images. Activated via options string: "zstd=true;zstd_level=19". Default remains LZMA for backwards compatibility. Tested: SHA-256 verified lossless roundtrips across 9 disc systems (Dreamcast, Saturn, Mega CD, PC Engine CD, Neo Geo CD, PS1, PS2 CD, PS2 DVD) and PS1 SBI subchannel preservation with zstd+CST.	2026-03-19 08:45:07 +01:00
Rebecca Wallander	c412030a8b	Use block alignment offset instead of absolute offset	2026-01-01 13:37:21 +01:00
Rebecca Wallander	86b6680e3e	Add data type to datastream block	2026-01-01 13:37:20 +01:00
Rebecca Wallander	65d34b1e9a	Add flux implementation	2026-01-01 13:35:43 +01:00
Natalia Portillo	7f0dea2755	Repurpose two unused header fields to store biggest image sector size.	2025-12-30 20:13:39 +00:00
Natalia Portillo	955789a160	Increase size of negative and overflow sectors in DDT2 to 32-bit.	2025-12-26 09:39:13 +00:00
Natalia Portillo	050810c91d	Update copyright year to 2026.	2025-12-23 08:23:40 +00:00
Natalia Portillo	e2f3323a04	Sync specification with code.	2025-10-11 13:17:26 +01:00
Natalia Portillo	61850a9520	Update DDT entry documentation to indicate 64-bit values	2025-10-11 01:34:22 +01:00
Natalia Portillo	17e1c0f2bd	Set DDTv2 as 64-bit and remove concept of multiple sizes of DDTs.	2025-10-10 02:39:57 +01:00
Natalia Portillo	01152f5c25	Add tape media support with metadata structures and update CMake configuration	2025-10-07 04:17:04 +01:00
Natalia Portillo	4491df8689	Add support for processing Aaru metadata JSON blocks	2025-10-05 05:06:30 +01:00
Natalia Portillo	7313897064	Add parsing and serialization functions for Lisa family disk tags	2025-10-04 01:29:03 +01:00
Natalia Portillo	5c7610c1c0	Use heuristics to setup table shift.	2025-10-02 04:40:16 +01:00
Natalia Portillo	41aee42c53	Enhance documentation for various structures with detailed descriptions and formatting improvements	2025-10-01 05:35:39 +01:00
Natalia Portillo	3b012797cb	Implement creating AaruFormat image and writing header.	2025-08-07 15:43:35 +01:00
Natalia Portillo	4b537e60a9	Define DDT2 header.	2025-08-03 20:48:30 +01:00
Natalia Portillo	5de2fc8f84	Introduce index block version 3 with enhanced fault tolerance and previous block referencing	2025-08-02 01:45:27 +01:00
Natalia Portillo	9a4c04b2ca	Implement support for index v2.	2025-08-01 21:18:48 +01:00
Natalia Portillo	2811f41734	[lib] Fix data size mismatch.	2025-08-01 02:48:16 +01:00
Natalia Portillo	af6e384678	Fix typo in comment.	2025-08-01 02:42:50 +01:00
Natalia Portillo	a8a18cf4d7	[lib] Split structures in separate headers.	2025-08-01 02:41:48 +01:00